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Table 3 Shear wave velocity profiles at JKM, MKM, and SNK

From: Ground motion estimation for the elevated bridges of the Kyushu Shinkansen derailment caused by the foreshock of the 2016 Kumamoto earthquake based on the site-effect substitution method

Thickness (m)

Depth (m)

Shear wave velocity (m/s)

(a) SNK

 3.8

3.8

130

 2.2

6.0

110

 2.5

8.5

210

 2.3

10.8

100

 11.1

21.9

180

 6.0

27.9

80

 4.4

32.3

130

 2.7

35.0

220

 –

–

550

(b) MKM

 4.0

4.0

140

 3.6

7.6

240

 3.5

11.1

190

 7.1

18.2

250

 5.2

23.4

100

 2.6

26.0

160

 –

–

550

(c) JKM

 2.8

2.8

120

 3.5

6.3

100

 3.5

9.8

230

 3.9

13.7

170

 6.1

19.8

200

 5.9

25.7

80

 4.9

30.6

110

 1.4

32.0

160

 –

–

450